Synthesis 2012; 44(17): 2735-2738
DOI: 10.1055/s-0032-1316612
paper
© Georg Thieme Verlag Stuttgart · New York

Synthesis of Protected 4-Amino- and 4-Azido-3-hydroxy-l-prolines from d-Glucose

Vijay M. Kasture
Department of Chemistry, Garware Research Centre, University of Pune, Pune 411007, India, Fax: +91(20)25691728   Email: ddd@chem.unipune.ac.in
,
Navnath B. Kalamkar
Department of Chemistry, Garware Research Centre, University of Pune, Pune 411007, India, Fax: +91(20)25691728   Email: ddd@chem.unipune.ac.in
,
Dilip D. Dhavale*
Department of Chemistry, Garware Research Centre, University of Pune, Pune 411007, India, Fax: +91(20)25691728   Email: ddd@chem.unipune.ac.in
› Author Affiliations
Further Information

Publication History

Received: 30 April 2012

Accepted after revision: 06 June 2012

Publication Date:
27 July 2012 (online)


Abstract

Differentially protected 4-azido- or 4-amino-3-hydroxy-l-prolines were synthesized in good overall yields (21–31%) from d-glucose. The synthetic strategy involved conversion of d-glucose into 3-[(benzyloxycarbonyl)amino]-3-deoxy-1,2-O-isopropylidene-α-d-glucofuranose, which was subjected to mesylation of the 5- and 6-hydroxy groups and subsequent intramolecular SN2 displacement of the 6-O-mesyl group by the 3-(benzyloxycarbonyl)amino group to give a pyrrolidine ring. The resulting intermediate underwent intermolecular SN2 displacement of the 5-O-mesyl group with sodium azide, hydrolysis of 1,2-acetonide group, treatment with sodium periodate, and Pinnick oxidation to give the required compounds.

Supporting Information